Add fire alarm support and update firmware version to 1.0.19

- Introduced CONN_ERR_FIRE_ALARM to handle fire alarm conditions in charger control.
- Added CMD_FIRE_ALARM command for external trigger handling in serial control.
- Updated firmware version from 1.0.17 to 1.0.19.
- Integrated fire alarm functionality into the charging loop and command handler.

Core/Inc/charger_control.h

@@ -47,6 +47,7 @@ typedef enum __attribute__((packed)){
 	CONN_ERR_HOTPLUG = 8, // Коннектор неожиданно отключился
 	CONN_ERR_EV_COMM = 9, // Ошибка протокола связи с электромобилем
 	CONN_ERR_PSU_FAULT = 10, // Ошибка PSU
+	CONN_ERR_FIRE_ALARM = 11, // Пожарная тревога (до перезагрузки)
 
 }CONN_Error_t;